Movable mounting arm



FIG. 1 is a bottom perspective view of a movable mounting arm showing our new design. The movable mounting arm is shown with a monitor (in broken lines) in an open position;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof; and

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is another bottom perspective view thereof, with the monitor in a closed position.

The broken lines shown in the drawings are included for the purpose of illustrating elements of the mounting arm and form no part of the claimed design. 

The ornamental design for a movable mounting arm, as shown and described. 